In the field of sustainable manufacturing, a wide range of research has been carried out to attain the more effective use of natural resources and the reduction of environmental impacts during the whole product life cycle. This goal can be best achieved by promoting multiple-reuse of parts, sub-assemblies, or entire products. However, the decision toward reusing an old product depends on a variety of parameters with many uncertainties. Therefore, a comprehensive model to assess the reusability of products prior to the reuse decision is urgently needed. The objective of this research has been to develop a comprehensive assessment model, integrating technical, environmental, social, and economic aspects to evaluate the reusability of industrial products. The assessment model consists of four sub-models, which are a methodology to assess the quality and reliability of products, a model to translate the social responsibility aspect into warranty cost, a methodology to integrate environmental costs, and an economic model to accumulate total life cycle cost as the basis of the evaluation. The model also facilitates trade-offs between the factors to investigate the possibility to improve the reusability of a product. To apply the assessment model in the real business environment, a set of decisionmaking methodologies under different take-back scenarios has been developed as a guideline for manufacturers. Furthermore, as the existence of uncertainty in the reuse strategy is undeniable, a methodology to integrate uncertainties into the assessment model is also developed. The model validation, using three real cases collected from industrial partners on consumer and commercial products, has confirmed the applicability of the model to provide a useful tool to evaluate products at the end of their life cycle. The model also enables decision makers to disclose the risk associated with the decision, thus improving the quality of the decision. The results are in good agreement with the basic theory that the reuse and remanufacturing strategy is highly recommended from both environmental and economic reasons.

In the field of sustainable manufacturing, a wide range of research has been carried out to attain the more effective use of natural resources and the reduction of environmental impacts during the whole product life cycle. This goal can be best achieved by promoting multiple-reuse of parts, sub-assemblies, or entire products. However, the decision toward reusing an old product depends on a variety of parameters with many uncertainties. Therefore, a comprehensive model to assess the reusability of products prior to the reuse decision is urgently needed. The objective of this research has been to develop a comprehensive assessment model, integrating technical, environmental, social, and economic aspects to evaluate the reusability of industrial products. The assessment model consists of four sub-models, which are a methodology to assess the quality and reliability of products, a model to translate the social responsibility aspect into warranty cost, a methodology to integrate environmental costs, and an economic model to accumulate total life cycle cost as the basis of the evaluation. The model also facilitates trade-offs between the factors to investigate the possibility to improve the reusability of a product. To apply the assessment model in the real business environment, a set of decisionmaking methodologies under different take-back scenarios has been developed as a guideline for manufacturers. Furthermore, as the existence of uncertainty in the reuse strategy is undeniable, a methodology to integrate uncertainties into the assessment model is also developed. The model validation, using three real cases collected from industrial partners on consumer and commercial products, has confirmed the applicability of the model to provide a useful tool to evaluate products at the end of their life cycle. The model also enables decision makers to disclose the risk associated with the decision, thus improving the quality of the decision. The results are in good agreement with the basic theory that the reuse and remanufacturing strategy is highly recommended from both environmental and economic reasons.

In the field of sustainable manufacturing, a wide range of research has been carried out to attain the more effective use of natural resources and the reduction of environmental impacts during the whole product life cycle. This goal can be best achieved by promoting multiple-reuse of parts, sub-assemblies, or entire products. However, the decision toward reusing an old product depends on a variety of parameters with many uncertainties. Therefore, a comprehensive model to assess the reusability of products prior to the reuse decision is urgently needed. The objective of this research has been to develop a comprehensive assessment model, integrating technical, environmental, social, and economic aspects to evaluate the reusability of industrial products. The assessment model consists of four sub-models, which are a methodology to assess the quality and reliability of products, a model to translate the social responsibility aspect into warranty cost, a methodology to integrate environmental costs, and an economic model to accumulate total life cycle cost as the basis of the evaluation. The model also facilitates trade-offs between the factors to investigate the possibility to improve the reusability of a product. To apply the assessment model in the real business environment, a set of decisionmaking methodologies under different take-back scenarios has been developed as a guideline for manufacturers. Furthermore, as the existence of uncertainty in the reuse strategy is undeniable, a methodology to integrate uncertainties into the assessment model is also developed. The model validation, using three real cases collected from industrial partners on consumer and commercial products, has confirmed the applicability of the model to provide a useful tool to evaluate products at the end of their life cycle. The model also enables decision makers to disclose the risk associated with the decision, thus improving the quality of the decision. The results are in good agreement with the basic theory that the reuse and remanufacturing strategy is highly recommended from both environmental and economic reasons.

In the field of sustainable manufacturing, a wide range of research has been carried out to attain the more effective use of natural resources and the reduction of environmental impacts during the whole product life cycle. This goal can be best achieved by promoting multiple-reuse of parts, sub-assemblies, or entire products. However, the decision toward reusing an old product depends on a variety of parameters with many uncertainties. Therefore, a comprehensive model to assess the reusability of products prior to the reuse decision is urgently needed. The objective of this research has been to develop a comprehensive assessment model, integrating technical, environmental, social, and economic aspects to evaluate the reusability of industrial products. The assessment model consists of four sub-models, which are a methodology to assess the quality and reliability of products, a model to translate the social responsibility aspect into warranty cost, a methodology to integrate environmental costs, and an economic model to accumulate total life cycle cost as the basis of the evaluation. The model also facilitates trade-offs between the factors to investigate the possibility to improve the reusability of a product. To apply the assessment model in the real business environment, a set of decisionmaking methodologies under different take-back scenarios has been developed as a guideline for manufacturers. Furthermore, as the existence of uncertainty in the reuse strategy is undeniable, a methodology to integrate uncertainties into the assessment model is also developed. The model validation, using three real cases collected from industrial partners on consumer and commercial products, has confirmed the applicability of the model to provide a useful tool to evaluate products at the end of their life cycle. The model also enables decision makers to disclose the risk associated with the decision, thus improving the quality of the decision. The results are in good agreement with the basic theory that the reuse and remanufacturing strategy is highly recommended from both environmental and economic reasons.

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Thesis (MPhil)--Stellenbosch University, 2005. / ENGLISH ABSTRACT: The aim of this thesis is to explore the relationship between research and policymaking in South African higher education, using the Education Policy Unit at the University of the Western Cape (UWC-EPU) -recently renamed the Centre for the Study of Higher Education - as a case study. The study begins by examining the various models that explain the nature of policymaking in Western democracies, as well as the main theoretical frameworks - namely the "two communities" theory and the enlightenment model of knowledge utilisation - that explain the relationship between the production of knowledge and its utilisation in policymaking. It is argued that, although most of these models were developed to analyse the policymaking process within the context of mature democracies, they nonetheless raise important issues for developing countries like South Africa. The study proceeds to provide an overview of the process of policy development in South Africa. It is suggested that a better way of understanding the evolution of higher education policy development in South Africa is to see it as having gone through four phases, each of which marks a significant turning point within higher education itself, as well as in the broader political context. The process of the policy development, and in particular the role of (higher education) research within it, is shown as one that was largely driven by political and ideological imperatives. The study then shifts to a discussion of the CSHE, commencing with an overview of its organisational history, and highlighting the main objectives of its research programme and the changes that occurred with regard to its research orientation. These are examined in relation to external factors - for example the shift from the development of policy frameworks to the focus on implementation - and in terms of the dynamics that were internal to the University of the Western Cape. This discussion also highlights the challenges that were faced by the EPUs and other progressive academics in the early phases of the policy development process, namely that of engaging in a 'reconstructive' agenda on the one hand, while undertaking intellectual/scientific work on the other hand. In the case of the CSHE, there was also the added challenge of contributing to the development of the nascent field of higher education studies. One of the key issues that emerge in the analysis of the interviews, which form the core source of data collection for this study, is the multifarious understanding of the way in which the research undertaken by the CSHE was to be utilised. The three notions of 'use' that are highlighted - which are also embedded in the objectives of the CSHE as set out in its constitution - are the following: • Utilisation as generation of ideas, and particularly as a contribution to the debates on social reconstruction • Utilisation as input into the policymaking process • Utilisation as contribution to scholarship The study shows that there is a mixed assessment of the extent to which the CSHE was able to address these competing - and sometimes contradictory - challenges. In the main, its efforts were hamstrung by a confluence of factors, ranging from its inability to recruit or attract experienced researchers, to the orientation of its research towards critique, something which was a feature of the scholarship emanating from the progressive academic community at the time. / AFRIKAANSE OPSOMMING: Die doel van hierdie tesis is om die verhouding tussen navorsing en beleidsvorming binne die konteks van die Suid- Afrikaanse hoër onderwysomgewing te ondersoek. Met die oog hierop word die Education Policy Unit aan die Universiteit van Wes-Kaapland (UWC-EPU), onlangs herdoop tot die Centre for the Study of Higher Education (CHSE), deur middel van 'n gevallestudie beskryf. Die studie begin met 'n ondersoek na die verskillende modelle wat poog om die aard van beleidsvorming binne Westerse demokrasieë te verduidelik. Verder word die hoof teoretiese raamwerke, tewete die "two communities" teorie asook die "enlightenment model", wat die verhouding tussen die skep van kennis en die aanwending daarvan binne 'n beleidskonteks wil verduidelik, ook ondersoek. Hoewel die meeste modelle van hierdie aard ontwikkel is om die proses van beleidsvorming binne volwasse demokrasieë te analiseer, word aangevoer dat hulle desnieteenstaande belangrike kwessies na vore bring vir ontwikkelende lande soos Suid-Afrika. Die studie gaan verder deur 'n oorsig te gee oor die proses van beleidsontwikkeling in Suid- Afrika. Daar word gesuggereer dat 'n meer verantwoorde wyse om die evolusie van hoër onderwysbeleid in Suid-Afrika te verstaan, sou wees om erkenning te gee aan 'n vier-fase-benadering, waarvan elk 'n betekenisvolle rigtingverandering aangedui het, sowel as die invloed van die breër politieke konteks. Die proses van beleidsontwikkeling, en meer spesifiek die rol van (hoër onderwys) navorsing daarbinne, word aangetoon as synde hoofsaaklik gemotifeer deur politieke en ideologiese imperatiewe. Hierna verskuif die fokus van die studie na 'n bespreking van die CSHE deur te begin met 'n oorsig oor die geskiedenis van die sentrum. Die hoof doelwitte van die sentrum se navorsingsprogram asook die veranderinge wat onlangs plaasgevind ten opsigte van navorsingsoriëntasie, word bespreek. Hierdie aspekte word ondersoek aan die hand van eksterne faktore - byvoorbeeld die verskuiwing wat plaasgevind het vanaf die klem op ontwikkelingsraamwerke na 'n fokus op implimentering - en in terme van die dinamika wat eie is en was aan die Universiteit van Wes Kaapland. Die gesprek poog verder om lig te werp op die tipiese uitdagings waarmee Education Policy Units en navorsers in hierdie veld mee te doen gehad het in die beginjare van die beleidsontwikkelingsproses, naamlik om vanuit 'n rekonstruktiewe agenda te opereer en terselftertyd betrokke te wees met navorsing op 'n akademiese en wetenskaplike vlak. In die geval van die CSHE, het die verdere uitdaging om deurlopend bydraes tot die veld van hoër onderwysstudies te lewer, hoë eise aan die eenheid gestel. 'n Sleutelaspek wat na vore gekom het tydens die analise van die onderhoude (laasgenoemde vorm die sentrale bron van vir die data-versameling van die studie) is dat uiteenlopende interpretasies bestaan van hoe die navorsing soos deur die CSHE onderneem, benut behoort te word. Die drie perspektiewe op benutting ("use") wat uitgelig word, en wat In sentrale deel van die doelwitte van die CSHE uitmaak soos in die grondwet van die sentrum vervat, is die volgende: • Benutting as die skep van idees, en in die besonder as 'n bydrae tot debatte oor sosiale rekonstruksie • Benutting as inset tot die proses van beleidmaking • Benutting as bydrae tot navorsing Die studie toon aan dat die maniere waarop die CSHE in staat was om hierdie kompeterende, en soms teensprekende, uitdagings te hanteer, op uiteenlopende wyses geëvalueer was. In hoofsaak is die pogings van die sentrum aan bande gelê deur 'n sameloop van verskillende faktore wat gestrek het vanaf die probleem om ervare navorsers te lok en aan te stel tot met die probleem om sy navorsing aan te pas en te heroriënteer gegrond op kritiese stemme, dikwels die gevolg van die progressiewe akademiese gemeenskap van die tyd.

At present, more and more demands are placed on the quality and the speed of transport of products and goods from manufacturers to suppliers and then to the end customer. This requires a lot of knowledge and experience in planning, purchasing, production and distribution. In all activities and at all levels of the organization, it is important to properly and timely to decide how to proceed in order to ensure maximum customer satisfaction at minimum cost to the company. To ensure speed and quality of distribution, it is necessary to focus on the logistics of circulatory systems. This includes both information and communication flow, and the supply, storage, transport, handling and packaging. To ensure all these services efficiently, quickly and on time, it is advisable that the company has to have developed appropriate methodology for the given process. The main aim of the doctoral thesis is to design a methodology for management decisions in the distribution area. The properly chosen methodology of distribution can help to speed up the transport of the product from the supplier to the customer or from the manufacturer to the customer, but ultimately to reduce the overall distribution costs. When deciding on the choice of distribution channel, processes and knowledge of European legislation in relation to the logistics and transport management in the Czech Republic are also important. The data collection and processing, under which the analysis of the current situation was carried out, were the bases for the methodology design. In the further step, the basic criteria for selection of the companies that could make the distribution were set up. Subsequently, the weights of importance were assigned to the given criteria. In the final decision for the selection of the distribution company, methods of multi-criteria decision-making were used. The thesis was developed on the basis of theoretical research and practical experience in businesses in the solved area. Objectives to be achieved: The aim of the doctoral thesis is the methodology design of managerial decision making in the European distribution area in connection with the Czech Republic's infrastructure in implementing the legislative requirements of the European environment while respecting the principles of integration.

Abstract At present, more and more demands are placed on the quality and the speed of transport of products and goods from manufacturers to suppliers and then to the end customer. This requires a lot of knowledge and experience in planning, purchasing, production and distribution. In all activities and at all levels of the organization, it is important to properly and timely to decide how to proceed in order to ensure maximum customer satisfaction at minimum cost to the company. To ensure speed and quality of distribution, it is necessary to focus on the logistics of circulatory systems. This includes both information and communication flow, and the supply, storage, transport, handling and packaging. To ensure all these services efficiently, quickly and on time, it is advisable that the company has to have developed appropriate methodology for the given process. The main aim of the doctoral thesis is to design a methodology for management decisions in the distribution area. Properly chosen methodology of distribution can help to speed up the movement of the product from the supplier to the customer or from the manufacturer to the customer, but ultimately to reduce the overall distribution costs. When deciding on the choice of distribution channel, processes and knowledge of European legislation in relation to the logistics and transport management in the Czech Republic are also important. The data collection and processing, under which the analysis of the current situation was carried out, were the bases for the methodology design. The basic criteria for selection of the companies that could make the distribution were set by another method. Subsequently, the weights of importance were assigned to the given criteria. In the final decision for the selection of the distribution company, methods of multi-criteria decision-making were used. The thesis was developed on the basis of theoretical research and practical experience in businesses in the solved area. Objectives to be achieved: The aim of the doctoral thesis is the methodology design of managerial decision making in the European distribution area.

Human hair profiling is an integral part of a forensic investigation but it is one of the most technically difficult subjects in forensic science. This thesis describes the research and development of a novel approach for the rapid identification of unknown human and other related keratin fibres found at a crime scene. The work presented here is developed systematically and considers sample collection, sample preparation, analysis and interpretation of spectral data for the profiling of hair fibres encountered in criminal cases. Spectral comparison of fibres was facilitated with the use of chemometrics methods such as PCA, SIMCA and Fuzzy Clustering, and the less common approach of multi-criteria decision making methodology (MCDM). The aim of the thesis was to investigate the potential of some vibrational spectroscopy techniques for matching and discrimination of single keratin hair fibres in the context of forensic evidence. The first objective (chapter 3) of the thesis was to evaluate the use of Raman and FT-IR micro-spectroscopy techniques for the forensic sampling of hair fibres and to propose the preferred technique for future forensic hair comparisons. The selection of the preferred technique was based on criteria such as spectral quality, ease of use, rapid analysis and universal application to different hair samples. FT-IR micro-spectroscopy was found to be the most appropriate technique for hair analysis because it enabled the rapid collection of spectra from a wide variety of hair fibres. Raman micro-spectroscopy, on the other hand, was hindered with fluorescence problems and did not allow the collection of spectra from pigmented fibres. This objective has therefore shown that FT-IR micro-spectroscopy is the preferable spectroscopic technique for forensic analysis of hair fibres, whilst Raman spectroscopy is the least preferred. The second objective (chapter 3) was to investigate, through a series of experiments, the effect of chemical treatment on the micro-environment of human hair fibres. The effect of bleaching agents on the hair fibres was studied with some detail at different treatment times and the results indicate a significant change in the chemical environment of the secondary structure of the hair fibre along with changes in the C-C backbone structure. One of the most important outcomes of this research was the behaviour of the fÑ-helix during chemical treatment. The hydrogen bonding in the fÑ-helix provides for the stable structure of the fibre and therefore any disruption to the fÑ-helix will inevitably damage the molecular structure of the fibre. The results highlighted the behaviour of the fÑ-helix, which undergoes a significant decrease in content during oxidation, and is partly converted to a random-coil structure, whilst the fÒ-sheet component of the secondary structure remains unaffected. The reported investigations show that the combination of FT-IR and Raman micro-spectroscopy can provide an insight and understanding into the complex chemical properties and reactions within a treated hair fibre. Importantly, this work demonstrates that with the aid of chemometrics, it is possible to investigate simultaneously FT-IR and Raman micro-spectroscopic information from oxidised hair fibres collected from one subject and treated at different times. The discrimination and matching of hair fibres on the basis of treatment has potential forensic applications. The third objective (chapter 4) attempted to expand the forensic application of FT-IR micro-spectroscopy to other keratin fibres. Animal fibres are commonly encountered in crime scenes and it thus becomes important to establish the origin of those fibres. The aim of this work was to establish the forensic applications of FT-IR micro-spectroscopy to animal fibres and to investigate any fundamental molecular differences between these fibres. The results established a discrimination between fibres consisting predominantly of fÑ-helix and those containing mainly a fÒ-sheet structure. More importantly, it was demonstrated through curve-fitting and chemometrics, that each keratin fibre contains a characteristic secondary structure arrangement. The work presented here is the first detailed FT-IR micro-spectroscopic study, utilising chemometrics as well as MCDM methods, for a wide range of keratin fibres, which are commonly, found as forensic evidence. Furthermore, it was demonstrated with the aid of the rank ordering MCDM methods PROMETHEE and GAIA, that it is possible to rank and discriminate keratin fibres according to their molecular characteristics obtained from direct measurements together with information sourced from the literature. The final objective (chapter 5) of the thesis was to propose an alternative method for the discrimination and matching of single scalp human hair fibres through the use of FT-IR micro-spectroscopy and chemometrics. The work successfully demonstrated, through a number of case scenarios, the application of the technique for the identification of variables such as gender and race for an unknown single hair fibre. In addition, it was also illustrated that known hair fibres (from the suspect or victim) can be readily matched to the unknown hair fibres found at the crime scene. This is the first time that a substantial, systematic FT-IR study of forensic hair identification has been presented. The research has shown that it is possible to model and correlate individual¡¦s characteristics with hair properties at molecular level with the use of chemometrics methods. A number of different, important forensic variables of immediate use to police in a crime scene investigation such as gender, race, treatment, black and white hair fibres were investigated. Blind samples were successfully applied both to validate available experimental data and extend the current database of experimental determinations. Protocols were posed for the application of this methodology in the future. The proposed FT-IR methodology presented in this thesis has provided an alternative approach to the characterisation of single scalp human hair fibres. The technique enables the rapid collection of spectra, followed by the objective analytical capabilities of chemometrics to successfully discriminate animal fibres, human hair fibres from different sources, treated from untreated hair fibres, as well as black and white hair fibres, on the basis of their molecular structure. The results can be readily produced and explained in the courts of law. Although the proposed relatively fast FT-IR technique is not aimed at displacing the two slower existing methods of hair analysis, namely comparative optical microscopy and DNA analysis, it has given a new dimension to the characterisation of hair fibres at a molecular level, providing a powerful tool for forensic investigations.